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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 125 (1994), S. 1067-1074 
    ISSN: 1434-4475
    Keywords: Zinc cobalt selenate ; Activity coefficients ; Free energy of mixed crystal formation ; Isopiestic method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Löslichkeitsisotherme des Systems ZnSeO4-CoSeO4-H2O wurde bei 25°C untersucht. Es wird festgestellt, daß das monokline CoSeO4·6H2O unstabil ist und in tetragonale Mischkristalle übergeht. Mittels der isopiestischen Methode wurden die Aktivitätskoeffizienten der Komponenten in den gesättigten Dreistofflösungen und Mischkristallen bestimmt. ΔG F der Mischkristallbildung weist eine negative Abweichung vom idealen Zustand auf.
    Notes: Summary The solubility in the ZnSeO4-CoSeO4-H2O system has been studied at 25°C. It has been established that the CoSeO4·6H2O monoclinic crystal structure is unstable and undergoes a change into a tetragonal structure due to the included zinc ions. Activity coefficients of the salt components in the saturated solutions and in the mixed crystal hexahydrates have been determined by the isopiestic method. ΔG F of (ZnxCo1−x)SeO4·6H2O mixed crystals shows a negative deviation from ideality.
    Type of Medium: Electronic Resource
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